Finding the Third Proportional to 478,845 and 741,427.50

Step by Step Solution

1. Step 1: Write the proportion equation
   478,845 : 741,427.50 = 741,427.50 : x
2. Step 2: Convert to fraction form
   478,845/741,427.50 = 741,427.50/x
3. Step 3: Cross multiply
   478,845x = 741,427.50 × 741,427.50
4. Step 4: Simplify right side
   478,845x = 549,714,737,756.25
5. Step 5: Solve for x
   x = 549,714,737,756.25/478,845
6. Step 6: Final answer
   x = 1,148,001.42