Finding the Third Proportional to 219,312 and 471,258

Step by Step Solution

1. Step 1: Write the proportion equation
   219,312 : 471,258 = 471,258 : x
2. Step 2: Convert to fraction form
   219,312/471,258 = 471,258/x
3. Step 3: Cross multiply
   219,312x = 471,258 × 471,258
4. Step 4: Simplify right side
   219,312x = 222,084,102,564
5. Step 5: Solve for x
   x = 222,084,102,564/219,312
6. Step 6: Final answer
   x = 1,012,639.99