Finding the Third Proportional to 3,677.91 and 7,815.23

Step by Step Solution

1. Step 1: Write the proportion equation
   3,677.91 : 7,815.23 = 7,815.23 : x
2. Step 2: Convert to fraction form
   3,677.91/7,815.23 = 7,815.23/x
3. Step 3: Cross multiply
   3,677.91x = 7,815.23 × 7,815.23
4. Step 4: Simplify right side
   3,677.91x = 61,077,888.34
5. Step 5: Solve for x
   x = 61,077,888.34/3,677.91
6. Step 6: Final answer
   x = 16,606.70