Finding the Third Proportional to 215,718 and 453,744.75

Step by Step Solution

1. Step 1: Write the proportion equation
   215,718 : 453,744.75 = 453,744.75 : x
2. Step 2: Convert to fraction form
   215,718/453,744.75 = 453,744.75/x
3. Step 3: Cross multiply
   215,718x = 453,744.75 × 453,744.75
4. Step 4: Simplify right side
   215,718x = 205,884,298,152.56
5. Step 5: Solve for x
   x = 205,884,298,152.56/215,718
6. Step 6: Final answer
   x = 954,414.09