Finding the Third Proportional to 38,870 and 59,431

Step by Step Solution

1. Step 1: Write the proportion equation
   38,870 : 59,431 = 59,431 : x
2. Step 2: Convert to fraction form
   38,870/59,431 = 59,431/x
3. Step 3: Cross multiply
   38,870x = 59,431 × 59,431
4. Step 4: Simplify right side
   38,870x = 3,532,043,761
5. Step 5: Solve for x
   x = 3,532,043,761/38,870
6. Step 6: Final answer
   x = 90,868.12