Finding the Third Proportional to 38,371.50 and 78,644.81

Step by Step Solution

1. Step 1: Write the proportion equation
   38,371.50 : 78,644.81 = 78,644.81 : x
2. Step 2: Convert to fraction form
   38,371.50/78,644.81 = 78,644.81/x
3. Step 3: Cross multiply
   38,371.50x = 78,644.81 × 78,644.81
4. Step 4: Simplify right side
   38,371.50x = 6,185,006,533.16
5. Step 5: Solve for x
   x = 6,185,006,533.16/38,371.50
6. Step 6: Final answer
   x = 161,187.51