Finding the Third Proportional to 1,243,928 and 1,980,300

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243,928 : 1,980,300 = 1,980,300 : x
2. Step 2: Convert to fraction form
   1,243,928/1,980,300 = 1,980,300/x
3. Step 3: Cross multiply
   1,243,928x = 1,980,300 × 1,980,300
4. Step 4: Simplify right side
   1,243,928x = 3,921,588,090,000
5. Step 5: Solve for x
   x = 3,921,588,090,000/1,243,928
6. Step 6: Final answer
   x = 3,152,584.47