Finding the Third Proportional to 133,929 and 212,719.50

Step by Step Solution

1. Step 1: Write the proportion equation
   133,929 : 212,719.50 = 212,719.50 : x
2. Step 2: Convert to fraction form
   133,929/212,719.50 = 212,719.50/x
3. Step 3: Cross multiply
   133,929x = 212,719.50 × 212,719.50
4. Step 4: Simplify right side
   133,929x = 45,249,585,680.25
5. Step 5: Solve for x
   x = 45,249,585,680.25/133,929
6. Step 6: Final answer
   x = 337,862.49