Finding the Third Proportional to 72,681 and 156,819

Step by Step Solution

1. Step 1: Write the proportion equation
   72,681 : 156,819 = 156,819 : x
2. Step 2: Convert to fraction form
   72,681/156,819 = 156,819/x
3. Step 3: Cross multiply
   72,681x = 156,819 × 156,819
4. Step 4: Simplify right side
   72,681x = 24,592,198,761
5. Step 5: Solve for x
   x = 24,592,198,761/72,681
6. Step 6: Final answer
   x = 338,358.01