Finding the Third Proportional to 17,690.63 and 38,662.31

Step by Step Solution

1. Step 1: Write the proportion equation
   17,690.63 : 38,662.31 = 38,662.31 : x
2. Step 2: Convert to fraction form
   17,690.63/38,662.31 = 38,662.31/x
3. Step 3: Cross multiply
   17,690.63x = 38,662.31 × 38,662.31
4. Step 4: Simplify right side
   17,690.63x = 1,494,774,407.85
5. Step 5: Solve for x
   x = 1,494,774,407.85/17,690.63
6. Step 6: Final answer
   x = 84,495.29