Finding the Third Proportional to 138,196.13 and 301,406.06

Step by Step Solution

1. Step 1: Write the proportion equation
   138,196.13 : 301,406.06 = 301,406.06 : x
2. Step 2: Convert to fraction form
   138,196.13/301,406.06 = 301,406.06/x
3. Step 3: Cross multiply
   138,196.13x = 301,406.06 × 301,406.06
4. Step 4: Simplify right side
   138,196.13x = 90,845,614,511.75
5. Step 5: Solve for x
   x = 90,845,614,511.75/138,196.13
6. Step 6: Final answer
   x = 657,367.31