Finding the Third Proportional to 507,801.50 and 788,818

Step by Step Solution

1. Step 1: Write the proportion equation
   507,801.50 : 788,818 = 788,818 : x
2. Step 2: Convert to fraction form
   507,801.50/788,818 = 788,818/x
3. Step 3: Cross multiply
   507,801.50x = 788,818 × 788,818
4. Step 4: Simplify right side
   507,801.50x = 622,233,837,124
5. Step 5: Solve for x
   x = 622,233,837,124/507,801.50
6. Step 6: Final answer
   x = 1,225,348.56