Finding the Third Proportional to 258,051.38 and 607,141.69

Step by Step Solution

1. Step 1: Write the proportion equation
   258,051.38 : 607,141.69 = 607,141.69 : x
2. Step 2: Convert to fraction form
   258,051.38/607,141.69 = 607,141.69/x
3. Step 3: Cross multiply
   258,051.38x = 607,141.69 × 607,141.69
4. Step 4: Simplify right side
   258,051.38x = 368,621,028,700.35
5. Step 5: Solve for x
   x = 368,621,028,700.35/258,051.38
6. Step 6: Final answer
   x = 1,428,479.23