Finding the Third Proportional to 485,658 and 735,260.63

Step by Step Solution

1. Step 1: Write the proportion equation
   485,658 : 735,260.63 = 735,260.63 : x
2. Step 2: Convert to fraction form
   485,658/735,260.63 = 735,260.63/x
3. Step 3: Cross multiply
   485,658x = 735,260.63 × 735,260.63
4. Step 4: Simplify right side
   485,658x = 540,608,186,675.39
5. Step 5: Solve for x
   x = 540,608,186,675.39/485,658
6. Step 6: Final answer
   x = 1,113,145.85