Finding the Third Proportional to 550,925.30 and 780,255.91

Step by Step Solution

1. Step 1: Write the proportion equation
   550,925.30 : 780,255.91 = 780,255.91 : x
2. Step 2: Convert to fraction form
   550,925.30/780,255.91 = 780,255.91/x
3. Step 3: Cross multiply
   550,925.30x = 780,255.91 × 780,255.91
4. Step 4: Simplify right side
   550,925.30x = 608,799,291,429.51
5. Step 5: Solve for x
   x = 608,799,291,429.51/550,925.30
6. Step 6: Final answer
   x = 1,105,048.72