Finding the Third Proportional to 53,071.88 and 77,420.25

Step by Step Solution

1. Step 1: Write the proportion equation
   53,071.88 : 77,420.25 = 77,420.25 : x
2. Step 2: Convert to fraction form
   53,071.88/77,420.25 = 77,420.25/x
3. Step 3: Cross multiply
   53,071.88x = 77,420.25 × 77,420.25
4. Step 4: Simplify right side
   53,071.88x = 5,993,895,110.06
5. Step 5: Solve for x
   x = 5,993,895,110.06/53,071.88
6. Step 6: Final answer
   x = 112,939.20