Finding the Third Proportional to 138,486.38 and 298,155.94

Step by Step Solution

1. Step 1: Write the proportion equation
   138,486.38 : 298,155.94 = 298,155.94 : x
2. Step 2: Convert to fraction form
   138,486.38/298,155.94 = 298,155.94/x
3. Step 3: Cross multiply
   138,486.38x = 298,155.94 × 298,155.94
4. Step 4: Simplify right side
   138,486.38x = 88,896,963,066.50
5. Step 5: Solve for x
   x = 88,896,963,066.50/138,486.38
6. Step 6: Final answer
   x = 641,918.48