Finding the Third Proportional to 2,615,312 and 5,643,480

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615,312 : 5,643,480 = 5,643,480 : x
2. Step 2: Convert to fraction form
   2,615,312/5,643,480 = 5,643,480/x
3. Step 3: Cross multiply
   2,615,312x = 5,643,480 × 5,643,480
4. Step 4: Simplify right side
   2,615,312x = 31,848,866,510,400
5. Step 5: Solve for x
   x = 31,848,866,510,400/2,615,312
6. Step 6: Final answer
   x = 12,177,845.90