Finding the Third Proportional to 16,631 and 35,899.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,631 : 35,899.50 = 35,899.50 : x
2. Step 2: Convert to fraction form
   16,631/35,899.50 = 35,899.50/x
3. Step 3: Cross multiply
   16,631x = 35,899.50 × 35,899.50
4. Step 4: Simplify right side
   16,631x = 1,288,774,100.25
5. Step 5: Solve for x
   x = 1,288,774,100.25/16,631
6. Step 6: Final answer
   x = 77,492.28