Finding the Third Proportional to 455,475 and 679,531.50

Step by Step Solution

1. Step 1: Write the proportion equation
   455,475 : 679,531.50 = 679,531.50 : x
2. Step 2: Convert to fraction form
   455,475/679,531.50 = 679,531.50/x
3. Step 3: Cross multiply
   455,475x = 679,531.50 × 679,531.50
4. Step 4: Simplify right side
   455,475x = 461,763,059,492.25
5. Step 5: Solve for x
   x = 461,763,059,492.25/455,475
6. Step 6: Final answer
   x = 1,013,805.50