Finding the Third Proportional to 53,608.88 and 78,854.06

Step by Step Solution

1. Step 1: Write the proportion equation
   53,608.88 : 78,854.06 = 78,854.06 : x
2. Step 2: Convert to fraction form
   53,608.88/78,854.06 = 78,854.06/x
3. Step 3: Cross multiply
   53,608.88x = 78,854.06 × 78,854.06
4. Step 4: Simplify right side
   53,608.88x = 6,217,963,172.75
5. Step 5: Solve for x
   x = 6,217,963,172.75/53,608.88
6. Step 6: Final answer
   x = 115,987.57