Finding the Third Proportional to 552,601 and 839,713.50

Step by Step Solution

1. Step 1: Write the proportion equation
   552,601 : 839,713.50 = 839,713.50 : x
2. Step 2: Convert to fraction form
   552,601/839,713.50 = 839,713.50/x
3. Step 3: Cross multiply
   552,601x = 839,713.50 × 839,713.50
4. Step 4: Simplify right side
   552,601x = 705,118,762,082.25
5. Step 5: Solve for x
   x = 705,118,762,082.25/552,601
6. Step 6: Final answer
   x = 1,275,999.79