Finding the Third Proportional to 340,453.75 and 748,443.50

Step by Step Solution

1. Step 1: Write the proportion equation
   340,453.75 : 748,443.50 = 748,443.50 : x
2. Step 2: Convert to fraction form
   340,453.75/748,443.50 = 748,443.50/x
3. Step 3: Cross multiply
   340,453.75x = 748,443.50 × 748,443.50
4. Step 4: Simplify right side
   340,453.75x = 560,167,672,692.25
5. Step 5: Solve for x
   x = 560,167,672,692.25/340,453.75
6. Step 6: Final answer
   x = 1,645,356.15