Finding the Third Proportional to 1,868.77 and 4,070.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,868.77 : 4,070.72 = 4,070.72 : x
2. Step 2: Convert to fraction form
   1,868.77/4,070.72 = 4,070.72/x
3. Step 3: Cross multiply
   1,868.77x = 4,070.72 × 4,070.72
4. Step 4: Simplify right side
   1,868.77x = 16,570,798.85
5. Step 5: Solve for x
   x = 16,570,798.85/1,868.77
6. Step 6: Final answer
   x = 8,867.20