Finding the Third Proportional to 212,478 and 464,160

Step by Step Solution

1. Step 1: Write the proportion equation
   212,478 : 464,160 = 464,160 : x
2. Step 2: Convert to fraction form
   212,478/464,160 = 464,160/x
3. Step 3: Cross multiply
   212,478x = 464,160 × 464,160
4. Step 4: Simplify right side
   212,478x = 215,444,505,600
5. Step 5: Solve for x
   x = 215,444,505,600/212,478
6. Step 6: Final answer
   x = 1,013,961.47