Finding the Third Proportional to 1,429,692 and 2,178,080

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429,692 : 2,178,080 = 2,178,080 : x
2. Step 2: Convert to fraction form
   1,429,692/2,178,080 = 2,178,080/x
3. Step 3: Cross multiply
   1,429,692x = 2,178,080 × 2,178,080
4. Step 4: Simplify right side
   1,429,692x = 4,744,032,486,400
5. Step 5: Solve for x
   x = 4,744,032,486,400/1,429,692
6. Step 6: Final answer
   x = 3,318,219.93