Finding the Third Proportional to 137,156 and 207,200

Step by Step Solution

1. Step 1: Write the proportion equation
   137,156 : 207,200 = 207,200 : x
2. Step 2: Convert to fraction form
   137,156/207,200 = 207,200/x
3. Step 3: Cross multiply
   137,156x = 207,200 × 207,200
4. Step 4: Simplify right side
   137,156x = 42,931,840,000
5. Step 5: Solve for x
   x = 42,931,840,000/137,156
6. Step 6: Final answer
   x = 313,014.67