Finding the Third Proportional to 218,258 and 482,402

Step by Step Solution

1. Step 1: Write the proportion equation
   218,258 : 482,402 = 482,402 : x
2. Step 2: Convert to fraction form
   218,258/482,402 = 482,402/x
3. Step 3: Cross multiply
   218,258x = 482,402 × 482,402
4. Step 4: Simplify right side
   218,258x = 232,711,689,604
5. Step 5: Solve for x
   x = 232,711,689,604/218,258
6. Step 6: Final answer
   x = 1,066,222.95