Finding the Third Proportional to 3,374.63 and 7,420.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,374.63 : 7,420.31 = 7,420.31 : x
2. Step 2: Convert to fraction form
   3,374.63/7,420.31 = 7,420.31/x
3. Step 3: Cross multiply
   3,374.63x = 7,420.31 × 7,420.31
4. Step 4: Simplify right side
   3,374.63x = 55,061,037.60
5. Step 5: Solve for x
   x = 55,061,037.60/3,374.63
6. Step 6: Final answer
   x = 16,316.19