Finding the Third Proportional to 89,846,451 and 138,015,139.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,846,451 : 138,015,139.50 = 138,015,139.50 : x
2. Step 2: Convert to fraction form
   89,846,451/138,015,139.50 = 138,015,139.50/x
3. Step 3: Cross multiply
   89,846,451x = 138,015,139.50 × 138,015,139.50
4. Step 4: Simplify right side
   89,846,451x = 19,048,178,731,204,460
5. Step 5: Solve for x
   x = 19,048,178,731,204,460/89,846,451
6. Step 6: Final answer
   x = 212,008,137.43