Finding the Third Proportional to 641.50 and 1,499.13

Step by Step Solution

1. Step 1: Write the proportion equation
   641.50 : 1,499.13 = 1,499.13 : x
2. Step 2: Convert to fraction form
   641.50/1,499.13 = 1,499.13/x
3. Step 3: Cross multiply
   641.50x = 1,499.13 × 1,499.13
4. Step 4: Simplify right side
   641.50x = 2,247,375.77
5. Step 5: Solve for x
   x = 2,247,375.77/641.50
6. Step 6: Final answer
   x = 3,503.31