Finding the Third Proportional to 552,631.50 and 878,766.50

Step by Step Solution

1. Step 1: Write the proportion equation
   552,631.50 : 878,766.50 = 878,766.50 : x
2. Step 2: Convert to fraction form
   552,631.50/878,766.50 = 878,766.50/x
3. Step 3: Cross multiply
   552,631.50x = 878,766.50 × 878,766.50
4. Step 4: Simplify right side
   552,631.50x = 772,230,561,522.25
5. Step 5: Solve for x
   x = 772,230,561,522.25/552,631.50
6. Step 6: Final answer
   x = 1,397,369.79