Finding the Third Proportional to 877,636.69 and 1,888,128.56

Step by Step Solution

1. Step 1: Write the proportion equation
   877,636.69 : 1,888,128.56 = 1,888,128.56 : x
2. Step 2: Convert to fraction form
   877,636.69/1,888,128.56 = 1,888,128.56/x
3. Step 3: Cross multiply
   877,636.69x = 1,888,128.56 × 1,888,128.56
4. Step 4: Simplify right side
   877,636.69x = 3,565,029,468,528.32
5. Step 5: Solve for x
   x = 3,565,029,468,528.32/877,636.69
6. Step 6: Final answer
   x = 4,062,078.90