Finding the Third Proportional to 137,131 and 207,158.50

Step by Step Solution

1. Step 1: Write the proportion equation
   137,131 : 207,158.50 = 207,158.50 : x
2. Step 2: Convert to fraction form
   137,131/207,158.50 = 207,158.50/x
3. Step 3: Cross multiply
   137,131x = 207,158.50 × 207,158.50
4. Step 4: Simplify right side
   137,131x = 42,914,644,122.25
5. Step 5: Solve for x
   x = 42,914,644,122.25/137,131
6. Step 6: Final answer
   x = 312,946.34