Finding the Third Proportional to 40,123 and 56,090

Step by Step Solution

1. Step 1: Write the proportion equation
   40,123 : 56,090 = 56,090 : x
2. Step 2: Convert to fraction form
   40,123/56,090 = 56,090/x
3. Step 3: Cross multiply
   40,123x = 56,090 × 56,090
4. Step 4: Simplify right side
   40,123x = 3,146,088,100
5. Step 5: Solve for x
   x = 3,146,088,100/40,123
6. Step 6: Final answer
   x = 78,411.09