Finding the Third Proportional to 69,320 and 99,131

Step by Step Solution

1. Step 1: Write the proportion equation
   69,320 : 99,131 = 99,131 : x
2. Step 2: Convert to fraction form
   69,320/99,131 = 99,131/x
3. Step 3: Cross multiply
   69,320x = 99,131 × 99,131
4. Step 4: Simplify right side
   69,320x = 9,826,955,161
5. Step 5: Solve for x
   x = 9,826,955,161/69,320
6. Step 6: Final answer
   x = 141,762.19