Finding the Third Proportional to 553,695 and 867,448.50

Step by Step Solution

1. Step 1: Write the proportion equation
   553,695 : 867,448.50 = 867,448.50 : x
2. Step 2: Convert to fraction form
   553,695/867,448.50 = 867,448.50/x
3. Step 3: Cross multiply
   553,695x = 867,448.50 × 867,448.50
4. Step 4: Simplify right side
   553,695x = 752,466,900,152.25
5. Step 5: Solve for x
   x = 752,466,900,152.25/553,695
6. Step 6: Final answer
   x = 1,358,991.68