Finding the Third Proportional to 659,574 and 991,003.50

Step by Step Solution

1. Step 1: Write the proportion equation
   659,574 : 991,003.50 = 991,003.50 : x
2. Step 2: Convert to fraction form
   659,574/991,003.50 = 991,003.50/x
3. Step 3: Cross multiply
   659,574x = 991,003.50 × 991,003.50
4. Step 4: Simplify right side
   659,574x = 982,087,937,012.25
5. Step 5: Solve for x
   x = 982,087,937,012.25/659,574
6. Step 6: Final answer
   x = 1,488,973.09