Finding the Third Proportional to 138,800 and 301,383.50

Step by Step Solution

1. Step 1: Write the proportion equation
   138,800 : 301,383.50 = 301,383.50 : x
2. Step 2: Convert to fraction form
   138,800/301,383.50 = 301,383.50/x
3. Step 3: Cross multiply
   138,800x = 301,383.50 × 301,383.50
4. Step 4: Simplify right side
   138,800x = 90,832,014,072.25
5. Step 5: Solve for x
   x = 90,832,014,072.25/138,800
6. Step 6: Final answer
   x = 654,409.32