Finding the Third Proportional to 2,177,978.63 and 4,495,786.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,177,978.63 : 4,495,786.88 = 4,495,786.88 : x
2. Step 2: Convert to fraction form
   2,177,978.63/4,495,786.88 = 4,495,786.88/x
3. Step 3: Cross multiply
   2,177,978.63x = 4,495,786.88 × 4,495,786.88
4. Step 4: Simplify right side
   2,177,978.63x = 20,212,099,625,422.27
5. Step 5: Solve for x
   x = 20,212,099,625,422.27/2,177,978.63
6. Step 6: Final answer
   x = 9,280,210.28