Finding the Third Proportional to 455,540 and 707,184.50

Step by Step Solution

1. Step 1: Write the proportion equation
   455,540 : 707,184.50 = 707,184.50 : x
2. Step 2: Convert to fraction form
   455,540/707,184.50 = 707,184.50/x
3. Step 3: Cross multiply
   455,540x = 707,184.50 × 707,184.50
4. Step 4: Simplify right side
   455,540x = 500,109,917,040.25
5. Step 5: Solve for x
   x = 500,109,917,040.25/455,540
6. Step 6: Final answer
   x = 1,097,839.74