Finding the Third Proportional to 210,128 and 466,912

Step by Step Solution

1. Step 1: Write the proportion equation
   210,128 : 466,912 = 466,912 : x
2. Step 2: Convert to fraction form
   210,128/466,912 = 466,912/x
3. Step 3: Cross multiply
   210,128x = 466,912 × 466,912
4. Step 4: Simplify right side
   210,128x = 218,006,815,744
5. Step 5: Solve for x
   x = 218,006,815,744/210,128
6. Step 6: Final answer
   x = 1,037,495.32