Finding the Third Proportional to 17,643 and 37,989

Step by Step Solution

1. Step 1: Write the proportion equation
   17,643 : 37,989 = 37,989 : x
2. Step 2: Convert to fraction form
   17,643/37,989 = 37,989/x
3. Step 3: Cross multiply
   17,643x = 37,989 × 37,989
4. Step 4: Simplify right side
   17,643x = 1,443,164,121
5. Step 5: Solve for x
   x = 1,443,164,121/17,643
6. Step 6: Final answer
   x = 81,798.11