Finding the Third Proportional to 4,609.31 and 10,000.88

Step by Step Solution

1. Step 1: Write the proportion equation
   4,609.31 : 10,000.88 = 10,000.88 : x
2. Step 2: Convert to fraction form
   4,609.31/10,000.88 = 10,000.88/x
3. Step 3: Cross multiply
   4,609.31x = 10,000.88 × 10,000.88
4. Step 4: Simplify right side
   4,609.31x = 100,017,500.77
5. Step 5: Solve for x
   x = 100,017,500.77/4,609.31
6. Step 6: Final answer
   x = 21,699.01