Finding the Third Proportional to 207,918 and 453,136.50

Step by Step Solution

1. Step 1: Write the proportion equation
   207,918 : 453,136.50 = 453,136.50 : x
2. Step 2: Convert to fraction form
   207,918/453,136.50 = 453,136.50/x
3. Step 3: Cross multiply
   207,918x = 453,136.50 × 453,136.50
4. Step 4: Simplify right side
   207,918x = 205,332,687,632.25
5. Step 5: Solve for x
   x = 205,332,687,632.25/207,918
6. Step 6: Final answer
   x = 987,565.71