Finding the Third Proportional to 1,422,430 and 2,125,220

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422,430 : 2,125,220 = 2,125,220 : x
2. Step 2: Convert to fraction form
   1,422,430/2,125,220 = 2,125,220/x
3. Step 3: Cross multiply
   1,422,430x = 2,125,220 × 2,125,220
4. Step 4: Simplify right side
   1,422,430x = 4,516,560,048,400
5. Step 5: Solve for x
   x = 4,516,560,048,400/1,422,430
6. Step 6: Final answer
   x = 3,175,242.40