Finding the Third Proportional to 359,642 and 787,011.50

Step by Step Solution

1. Step 1: Write the proportion equation
   359,642 : 787,011.50 = 787,011.50 : x
2. Step 2: Convert to fraction form
   359,642/787,011.50 = 787,011.50/x
3. Step 3: Cross multiply
   359,642x = 787,011.50 × 787,011.50
4. Step 4: Simplify right side
   359,642x = 619,387,101,132.25
5. Step 5: Solve for x
   x = 619,387,101,132.25/359,642
6. Step 6: Final answer
   x = 1,722,232.39