Finding the Third Proportional to 553,749 and 867,533.50

Step by Step Solution

1. Step 1: Write the proportion equation
   553,749 : 867,533.50 = 867,533.50 : x
2. Step 2: Convert to fraction form
   553,749/867,533.50 = 867,533.50/x
3. Step 3: Cross multiply
   553,749x = 867,533.50 × 867,533.50
4. Step 4: Simplify right side
   553,749x = 752,614,373,622.25
5. Step 5: Solve for x
   x = 752,614,373,622.25/553,749
6. Step 6: Final answer
   x = 1,359,125.48