Finding the Third Proportional to 56,616 and 72,612

Step by Step Solution

1. Step 1: Write the proportion equation
   56,616 : 72,612 = 72,612 : x
2. Step 2: Convert to fraction form
   56,616/72,612 = 72,612/x
3. Step 3: Cross multiply
   56,616x = 72,612 × 72,612
4. Step 4: Simplify right side
   56,616x = 5,272,502,544
5. Step 5: Solve for x
   x = 5,272,502,544/56,616
6. Step 6: Final answer
   x = 93,127.43