Finding the Third Proportional to 234,981 and 357,988.50

Step by Step Solution

1. Step 1: Write the proportion equation
   234,981 : 357,988.50 = 357,988.50 : x
2. Step 2: Convert to fraction form
   234,981/357,988.50 = 357,988.50/x
3. Step 3: Cross multiply
   234,981x = 357,988.50 × 357,988.50
4. Step 4: Simplify right side
   234,981x = 128,155,766,132.25
5. Step 5: Solve for x
   x = 128,155,766,132.25/234,981
6. Step 6: Final answer
   x = 545,387.78