Finding the Third Proportional to 72,116 and 156,402

Step by Step Solution

1. Step 1: Write the proportion equation
   72,116 : 156,402 = 156,402 : x
2. Step 2: Convert to fraction form
   72,116/156,402 = 156,402/x
3. Step 3: Cross multiply
   72,116x = 156,402 × 156,402
4. Step 4: Simplify right side
   72,116x = 24,461,585,604
5. Step 5: Solve for x
   x = 24,461,585,604/72,116
6. Step 6: Final answer
   x = 339,197.76