Finding the Third Proportional to 148,315.31 and 307,145.16

Step by Step Solution

1. Step 1: Write the proportion equation
   148,315.31 : 307,145.16 = 307,145.16 : x
2. Step 2: Convert to fraction form
   148,315.31/307,145.16 = 307,145.16/x
3. Step 3: Cross multiply
   148,315.31x = 307,145.16 × 307,145.16
4. Step 4: Simplify right side
   148,315.31x = 94,338,147,007.84
5. Step 5: Solve for x
   x = 94,338,147,007.84/148,315.31
6. Step 6: Final answer
   x = 636,064.78