Finding the Third Proportional to 577,746 and 845,221.50

Step by Step Solution

1. Step 1: Write the proportion equation
   577,746 : 845,221.50 = 845,221.50 : x
2. Step 2: Convert to fraction form
   577,746/845,221.50 = 845,221.50/x
3. Step 3: Cross multiply
   577,746x = 845,221.50 × 845,221.50
4. Step 4: Simplify right side
   577,746x = 714,399,384,062.25
5. Step 5: Solve for x
   x = 714,399,384,062.25/577,746
6. Step 6: Final answer
   x = 1,236,528.48