Finding the Third Proportional to 478,870 and 714,153

Step by Step Solution

1. Step 1: Write the proportion equation
   478,870 : 714,153 = 714,153 : x
2. Step 2: Convert to fraction form
   478,870/714,153 = 714,153/x
3. Step 3: Cross multiply
   478,870x = 714,153 × 714,153
4. Step 4: Simplify right side
   478,870x = 510,014,507,409
5. Step 5: Solve for x
   x = 510,014,507,409/478,870
6. Step 6: Final answer
   x = 1,065,037.50