Finding the Third Proportional to 387,050.50 and 586,408

Step by Step Solution

1. Step 1: Write the proportion equation
   387,050.50 : 586,408 = 586,408 : x
2. Step 2: Convert to fraction form
   387,050.50/586,408 = 586,408/x
3. Step 3: Cross multiply
   387,050.50x = 586,408 × 586,408
4. Step 4: Simplify right side
   387,050.50x = 343,874,342,464
5. Step 5: Solve for x
   x = 343,874,342,464/387,050.50
6. Step 6: Final answer
   x = 888,448.26