Finding the Third Proportional to 715,456.50 and 1,555,156.50

Step by Step Solution

1. Step 1: Write the proportion equation
   715,456.50 : 1,555,156.50 = 1,555,156.50 : x
2. Step 2: Convert to fraction form
   715,456.50/1,555,156.50 = 1,555,156.50/x
3. Step 3: Cross multiply
   715,456.50x = 1,555,156.50 × 1,555,156.50
4. Step 4: Simplify right side
   715,456.50x = 2,418,511,739,492.25
5. Step 5: Solve for x
   x = 2,418,511,739,492.25/715,456.50
6. Step 6: Final answer
   x = 3,380,375.66