Finding the Third Proportional to 61,418.25 and 71,472.38

Step by Step Solution

1. Step 1: Write the proportion equation
   61,418.25 : 71,472.38 = 71,472.38 : x
2. Step 2: Convert to fraction form
   61,418.25/71,472.38 = 71,472.38/x
3. Step 3: Cross multiply
   61,418.25x = 71,472.38 × 71,472.38
4. Step 4: Simplify right side
   61,418.25x = 5,108,300,388.14
5. Step 5: Solve for x
   x = 5,108,300,388.14/61,418.25
6. Step 6: Final answer
   x = 83,172.35