Finding the Third Proportional to 478,747.50 and 728,068.50

Step by Step Solution

1. Step 1: Write the proportion equation
   478,747.50 : 728,068.50 = 728,068.50 : x
2. Step 2: Convert to fraction form
   478,747.50/728,068.50 = 728,068.50/x
3. Step 3: Cross multiply
   478,747.50x = 728,068.50 × 728,068.50
4. Step 4: Simplify right side
   478,747.50x = 530,083,740,692.25
5. Step 5: Solve for x
   x = 530,083,740,692.25/478,747.50
6. Step 6: Final answer
   x = 1,107,230.31