Finding the Third Proportional to 359,851.50 and 763,987.50

Step by Step Solution

1. Step 1: Write the proportion equation
   359,851.50 : 763,987.50 = 763,987.50 : x
2. Step 2: Convert to fraction form
   359,851.50/763,987.50 = 763,987.50/x
3. Step 3: Cross multiply
   359,851.50x = 763,987.50 × 763,987.50
4. Step 4: Simplify right side
   359,851.50x = 583,676,900,156.25
5. Step 5: Solve for x
   x = 583,676,900,156.25/359,851.50
6. Step 6: Final answer
   x = 1,621,993.80