Finding the Third Proportional to 215,880 and 458,066

Step by Step Solution

1. Step 1: Write the proportion equation
   215,880 : 458,066 = 458,066 : x
2. Step 2: Convert to fraction form
   215,880/458,066 = 458,066/x
3. Step 3: Cross multiply
   215,880x = 458,066 × 458,066
4. Step 4: Simplify right side
   215,880x = 209,824,460,356
5. Step 5: Solve for x
   x = 209,824,460,356/215,880
6. Step 6: Final answer
   x = 971,949.51