Finding the Third Proportional to 549,993 and 875,155.50

Step by Step Solution

1. Step 1: Write the proportion equation
   549,993 : 875,155.50 = 875,155.50 : x
2. Step 2: Convert to fraction form
   549,993/875,155.50 = 875,155.50/x
3. Step 3: Cross multiply
   549,993x = 875,155.50 × 875,155.50
4. Step 4: Simplify right side
   549,993x = 765,897,149,180.25
5. Step 5: Solve for x
   x = 765,897,149,180.25/549,993
6. Step 6: Final answer
   x = 1,392,557.99