Finding the Third Proportional to 40,870 and 86,113

Step by Step Solution

1. Step 1: Write the proportion equation
   40,870 : 86,113 = 86,113 : x
2. Step 2: Convert to fraction form
   40,870/86,113 = 86,113/x
3. Step 3: Cross multiply
   40,870x = 86,113 × 86,113
4. Step 4: Simplify right side
   40,870x = 7,415,448,769
5. Step 5: Solve for x
   x = 7,415,448,769/40,870
6. Step 6: Final answer
   x = 181,439.90