Finding the Third Proportional to 53,686.13 and 70,125.75

Step by Step Solution

1. Step 1: Write the proportion equation
   53,686.13 : 70,125.75 = 70,125.75 : x
2. Step 2: Convert to fraction form
   53,686.13/70,125.75 = 70,125.75/x
3. Step 3: Cross multiply
   53,686.13x = 70,125.75 × 70,125.75
4. Step 4: Simplify right side
   53,686.13x = 4,917,620,813.06
5. Step 5: Solve for x
   x = 4,917,620,813.06/53,686.13
6. Step 6: Final answer
   x = 91,599.47