Finding the Third Proportional to 207,901 and 316,225.50

Step by Step Solution

1. Step 1: Write the proportion equation
   207,901 : 316,225.50 = 316,225.50 : x
2. Step 2: Convert to fraction form
   207,901/316,225.50 = 316,225.50/x
3. Step 3: Cross multiply
   207,901x = 316,225.50 × 316,225.50
4. Step 4: Simplify right side
   207,901x = 99,998,566,850.25
5. Step 5: Solve for x
   x = 99,998,566,850.25/207,901
6. Step 6: Final answer
   x = 480,991.27