Finding the Third Proportional to 36,090 and 56,688

Step by Step Solution

1. Step 1: Write the proportion equation
   36,090 : 56,688 = 56,688 : x
2. Step 2: Convert to fraction form
   36,090/56,688 = 56,688/x
3. Step 3: Cross multiply
   36,090x = 56,688 × 56,688
4. Step 4: Simplify right side
   36,090x = 3,213,529,344
5. Step 5: Solve for x
   x = 3,213,529,344/36,090
6. Step 6: Final answer
   x = 89,042.10