Finding the Third Proportional to 643,146.75 and 1,001,443.50

Step by Step Solution

1. Step 1: Write the proportion equation
   643,146.75 : 1,001,443.50 = 1,001,443.50 : x
2. Step 2: Convert to fraction form
   643,146.75/1,001,443.50 = 1,001,443.50/x
3. Step 3: Cross multiply
   643,146.75x = 1,001,443.50 × 1,001,443.50
4. Step 4: Simplify right side
   643,146.75x = 1,002,889,083,692.25
5. Step 5: Solve for x
   x = 1,002,889,083,692.25/643,146.75
6. Step 6: Final answer
   x = 1,559,347.20