Finding the Third Proportional to 71,929.50 and 156,090

Step by Step Solution

1. Step 1: Write the proportion equation
   71,929.50 : 156,090 = 156,090 : x
2. Step 2: Convert to fraction form
   71,929.50/156,090 = 156,090/x
3. Step 3: Cross multiply
   71,929.50x = 156,090 × 156,090
4. Step 4: Simplify right side
   71,929.50x = 24,364,088,100
5. Step 5: Solve for x
   x = 24,364,088,100/71,929.50
6. Step 6: Final answer
   x = 338,721.78