Finding the Third Proportional to 56,128 and 88,860

Step by Step Solution

1. Step 1: Write the proportion equation
   56,128 : 88,860 = 88,860 : x
2. Step 2: Convert to fraction form
   56,128/88,860 = 88,860/x
3. Step 3: Cross multiply
   56,128x = 88,860 × 88,860
4. Step 4: Simplify right side
   56,128x = 7,896,099,600
5. Step 5: Solve for x
   x = 7,896,099,600/56,128
6. Step 6: Final answer
   x = 140,680.22