Finding the Third Proportional to 530,978 and 1,146,400

Step by Step Solution

1. Step 1: Write the proportion equation
   530,978 : 1,146,400 = 1,146,400 : x
2. Step 2: Convert to fraction form
   530,978/1,146,400 = 1,146,400/x
3. Step 3: Cross multiply
   530,978x = 1,146,400 × 1,146,400
4. Step 4: Simplify right side
   530,978x = 1,314,232,960,000
5. Step 5: Solve for x
   x = 1,314,232,960,000/530,978
6. Step 6: Final answer
   x = 2,475,117.54