Finding the Third Proportional to 398,749.50 and 875,005.88

Step by Step Solution

1. Step 1: Write the proportion equation
   398,749.50 : 875,005.88 = 875,005.88 : x
2. Step 2: Convert to fraction form
   398,749.50/875,005.88 = 875,005.88/x
3. Step 3: Cross multiply
   398,749.50x = 875,005.88 × 875,005.88
4. Step 4: Simplify right side
   398,749.50x = 765,635,281,284.52
5. Step 5: Solve for x
   x = 765,635,281,284.52/398,749.50
6. Step 6: Final answer
   x = 1,920,090.89