Finding the Third Proportional to 72,690 and 156,516

Step by Step Solution

1. Step 1: Write the proportion equation
   72,690 : 156,516 = 156,516 : x
2. Step 2: Convert to fraction form
   72,690/156,516 = 156,516/x
3. Step 3: Cross multiply
   72,690x = 156,516 × 156,516
4. Step 4: Simplify right side
   72,690x = 24,497,258,256
5. Step 5: Solve for x
   x = 24,497,258,256/72,690
6. Step 6: Final answer
   x = 337,010.02