Finding the Third Proportional to 130,019.50 and 279,438

Step by Step Solution

1. Step 1: Write the proportion equation
   130,019.50 : 279,438 = 279,438 : x
2. Step 2: Convert to fraction form
   130,019.50/279,438 = 279,438/x
3. Step 3: Cross multiply
   130,019.50x = 279,438 × 279,438
4. Step 4: Simplify right side
   130,019.50x = 78,085,595,844
5. Step 5: Solve for x
   x = 78,085,595,844/130,019.50
6. Step 6: Final answer
   x = 600,568.34