Finding the Third Proportional to 478,865 and 714,145.50

Step by Step Solution

1. Step 1: Write the proportion equation
   478,865 : 714,145.50 = 714,145.50 : x
2. Step 2: Convert to fraction form
   478,865/714,145.50 = 714,145.50/x
3. Step 3: Cross multiply
   478,865x = 714,145.50 × 714,145.50
4. Step 4: Simplify right side
   478,865x = 510,003,795,170.25
5. Step 5: Solve for x
   x = 510,003,795,170.25/478,865
6. Step 6: Final answer
   x = 1,065,026.25