Finding the Third Proportional to 17,872.84 and 39,316.64

Step by Step Solution

1. Step 1: Write the proportion equation
   17,872.84 : 39,316.64 = 39,316.64 : x
2. Step 2: Convert to fraction form
   17,872.84/39,316.64 = 39,316.64/x
3. Step 3: Cross multiply
   17,872.84x = 39,316.64 × 39,316.64
4. Step 4: Simplify right side
   17,872.84x = 1,545,798,230.04
5. Step 5: Solve for x
   x = 1,545,798,230.04/17,872.84
6. Step 6: Final answer
   x = 86,488.67