Finding the Third Proportional to 72,297 and 156,690

Step by Step Solution

1. Step 1: Write the proportion equation
   72,297 : 156,690 = 156,690 : x
2. Step 2: Convert to fraction form
   72,297/156,690 = 156,690/x
3. Step 3: Cross multiply
   72,297x = 156,690 × 156,690
4. Step 4: Simplify right side
   72,297x = 24,551,756,100
5. Step 5: Solve for x
   x = 24,551,756,100/72,297
6. Step 6: Final answer
   x = 339,595.78