Finding the Third Proportional to 31,298.81 and 67,609.13

Step by Step Solution

1. Step 1: Write the proportion equation
   31,298.81 : 67,609.13 = 67,609.13 : x
2. Step 2: Convert to fraction form
   31,298.81/67,609.13 = 67,609.13/x
3. Step 3: Cross multiply
   31,298.81x = 67,609.13 × 67,609.13
4. Step 4: Simplify right side
   31,298.81x = 4,570,993,783.27
5. Step 5: Solve for x
   x = 4,570,993,783.27/31,298.81
6. Step 6: Final answer
   x = 146,043.68