Finding the Third Proportional to 577,359 and 831,661.50

Step by Step Solution

1. Step 1: Write the proportion equation
   577,359 : 831,661.50 = 831,661.50 : x
2. Step 2: Convert to fraction form
   577,359/831,661.50 = 831,661.50/x
3. Step 3: Cross multiply
   577,359x = 831,661.50 × 831,661.50
4. Step 4: Simplify right side
   577,359x = 691,660,850,582.25
5. Step 5: Solve for x
   x = 691,660,850,582.25/577,359
6. Step 6: Final answer
   x = 1,197,973.62