Finding the Third Proportional to 17,858.50 and 38,891.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,858.50 : 38,891.50 = 38,891.50 : x
2. Step 2: Convert to fraction form
   17,858.50/38,891.50 = 38,891.50/x
3. Step 3: Cross multiply
   17,858.50x = 38,891.50 × 38,891.50
4. Step 4: Simplify right side
   17,858.50x = 1,512,548,772.25
5. Step 5: Solve for x
   x = 1,512,548,772.25/17,858.50
6. Step 6: Final answer
   x = 84,696.29