Finding the Third Proportional to 71,399 and 156,808.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,399 : 156,808.50 = 156,808.50 : x
2. Step 2: Convert to fraction form
   71,399/156,808.50 = 156,808.50/x
3. Step 3: Cross multiply
   71,399x = 156,808.50 × 156,808.50
4. Step 4: Simplify right side
   71,399x = 24,588,905,672.25
5. Step 5: Solve for x
   x = 24,588,905,672.25/71,399
6. Step 6: Final answer
   x = 344,387.26