Finding the Third Proportional to 359,988 and 771,210.75

Step by Step Solution

1. Step 1: Write the proportion equation
   359,988 : 771,210.75 = 771,210.75 : x
2. Step 2: Convert to fraction form
   359,988/771,210.75 = 771,210.75/x
3. Step 3: Cross multiply
   359,988x = 771,210.75 × 771,210.75
4. Step 4: Simplify right side
   359,988x = 594,766,020,915.56
5. Step 5: Solve for x
   x = 594,766,020,915.56/359,988
6. Step 6: Final answer
   x = 1,652,182.91