Finding the Third Proportional to 133,911 and 207,256.50

Step by Step Solution

1. Step 1: Write the proportion equation
   133,911 : 207,256.50 = 207,256.50 : x
2. Step 2: Convert to fraction form
   133,911/207,256.50 = 207,256.50/x
3. Step 3: Cross multiply
   133,911x = 207,256.50 × 207,256.50
4. Step 4: Simplify right side
   133,911x = 42,955,256,792.25
5. Step 5: Solve for x
   x = 42,955,256,792.25/133,911
6. Step 6: Final answer
   x = 320,774.67