Finding the Third Proportional to 1,228,256 and 2,666,312

Step by Step Solution

1. Step 1: Write the proportion equation
   1,228,256 : 2,666,312 = 2,666,312 : x
2. Step 2: Convert to fraction form
   1,228,256/2,666,312 = 2,666,312/x
3. Step 3: Cross multiply
   1,228,256x = 2,666,312 × 2,666,312
4. Step 4: Simplify right side
   1,228,256x = 7,109,219,681,344
5. Step 5: Solve for x
   x = 7,109,219,681,344/1,228,256
6. Step 6: Final answer
   x = 5,788,060.21