Finding the Third Proportional to 1,312,128 and 1,961,361

Step by Step Solution

1. Step 1: Write the proportion equation
   1,312,128 : 1,961,361 = 1,961,361 : x
2. Step 2: Convert to fraction form
   1,312,128/1,961,361 = 1,961,361/x
3. Step 3: Cross multiply
   1,312,128x = 1,961,361 × 1,961,361
4. Step 4: Simplify right side
   1,312,128x = 3,846,936,972,321
5. Step 5: Solve for x
   x = 3,846,936,972,321/1,312,128
6. Step 6: Final answer
   x = 2,931,830.56