Finding the Third Proportional to 455,454.56 and 680,671.69

Step by Step Solution

1. Step 1: Write the proportion equation
   455,454.56 : 680,671.69 = 680,671.69 : x
2. Step 2: Convert to fraction form
   455,454.56/680,671.69 = 680,671.69/x
3. Step 3: Cross multiply
   455,454.56x = 680,671.69 × 680,671.69
4. Step 4: Simplify right side
   455,454.56x = 463,313,946,164.10
5. Step 5: Solve for x
   x = 463,313,946,164.10/455,454.56
6. Step 6: Final answer
   x = 1,017,256.13