Finding the Third Proportional to 53,151.19 and 81,556.88

Step by Step Solution

1. Step 1: Write the proportion equation
   53,151.19 : 81,556.88 = 81,556.88 : x
2. Step 2: Convert to fraction form
   53,151.19/81,556.88 = 81,556.88/x
3. Step 3: Cross multiply
   53,151.19x = 81,556.88 × 81,556.88
4. Step 4: Simplify right side
   53,151.19x = 6,651,523,859.77
5. Step 5: Solve for x
   x = 6,651,523,859.77/53,151.19
6. Step 6: Final answer
   x = 125,143.47