Finding the Third Proportional to 55,499 and 88,272

Step by Step Solution

1. Step 1: Write the proportion equation
   55,499 : 88,272 = 88,272 : x
2. Step 2: Convert to fraction form
   55,499/88,272 = 88,272/x
3. Step 3: Cross multiply
   55,499x = 88,272 × 88,272
4. Step 4: Simplify right side
   55,499x = 7,791,945,984
5. Step 5: Solve for x
   x = 7,791,945,984/55,499
6. Step 6: Final answer
   x = 140,397.95