Finding the Third Proportional to 56,280 and 89,118

Step by Step Solution

1. Step 1: Write the proportion equation
   56,280 : 89,118 = 89,118 : x
2. Step 2: Convert to fraction form
   56,280/89,118 = 89,118/x
3. Step 3: Cross multiply
   56,280x = 89,118 × 89,118
4. Step 4: Simplify right side
   56,280x = 7,942,017,924
5. Step 5: Solve for x
   x = 7,942,017,924/56,280
6. Step 6: Final answer
   x = 141,116.17