Finding the Third Proportional to 552,507.50 and 830,818

Step by Step Solution

1. Step 1: Write the proportion equation
   552,507.50 : 830,818 = 830,818 : x
2. Step 2: Convert to fraction form
   552,507.50/830,818 = 830,818/x
3. Step 3: Cross multiply
   552,507.50x = 830,818 × 830,818
4. Step 4: Simplify right side
   552,507.50x = 690,258,549,124
5. Step 5: Solve for x
   x = 690,258,549,124/552,507.50
6. Step 6: Final answer
   x = 1,249,319.78