Finding the Third Proportional to 149,649,138,540 and 309,905,931,595.50

Step by Step Solution

1. Step 1: Write the proportion equation
   149,649,138,540 : 309,905,931,595.50 = 309,905,931,595.50 : x
2. Step 2: Convert to fraction form
   149,649,138,540/309,905,931,595.50 = 309,905,931,595.50/x
3. Step 3: Cross multiply
   149,649,138,540x = 309,905,931,595.50 × 309,905,931,595.50
4. Step 4: Simplify right side
   149,649,138,540x = 96,041,686,438,074,719,928,320
5. Step 5: Solve for x
   x = 96,041,686,438,074,719,928,320/149,649,138,540
6. Step 6: Final answer
   x = 641,779,079,886.94