Finding the Third Proportional to 215,874 and 458,054

Step by Step Solution

1. Step 1: Write the proportion equation
   215,874 : 458,054 = 458,054 : x
2. Step 2: Convert to fraction form
   215,874/458,054 = 458,054/x
3. Step 3: Cross multiply
   215,874x = 458,054 × 458,054
4. Step 4: Simplify right side
   215,874x = 209,813,466,916
5. Step 5: Solve for x
   x = 209,813,466,916/215,874
6. Step 6: Final answer
   x = 971,925.60