Finding the Third Proportional to 71,439 and 152,719.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,439 : 152,719.50 = 152,719.50 : x
2. Step 2: Convert to fraction form
   71,439/152,719.50 = 152,719.50/x
3. Step 3: Cross multiply
   71,439x = 152,719.50 × 152,719.50
4. Step 4: Simplify right side
   71,439x = 23,323,245,680.25
5. Step 5: Solve for x
   x = 23,323,245,680.25/71,439
6. Step 6: Final answer
   x = 326,477.77