Finding the Third Proportional to 913,798 and 1,980,139

Step by Step Solution

1. Step 1: Write the proportion equation
   913,798 : 1,980,139 = 1,980,139 : x
2. Step 2: Convert to fraction form
   913,798/1,980,139 = 1,980,139/x
3. Step 3: Cross multiply
   913,798x = 1,980,139 × 1,980,139
4. Step 4: Simplify right side
   913,798x = 3,920,950,459,321
5. Step 5: Solve for x
   x = 3,920,950,459,321/913,798
6. Step 6: Final answer
   x = 4,290,828.45