Finding the Third Proportional to 53,239.78 and 62,959.78

Step by Step Solution

1. Step 1: Write the proportion equation
   53,239.78 : 62,959.78 = 62,959.78 : x
2. Step 2: Convert to fraction form
   53,239.78/62,959.78 = 62,959.78/x
3. Step 3: Cross multiply
   53,239.78x = 62,959.78 × 62,959.78
4. Step 4: Simplify right side
   53,239.78x = 3,963,934,055.05
5. Step 5: Solve for x
   x = 3,963,934,055.05/53,239.78
6. Step 6: Final answer
   x = 74,454.36