Finding the Third Proportional to 992,390 and 2,173,900

Step by Step Solution

1. Step 1: Write the proportion equation
   992,390 : 2,173,900 = 2,173,900 : x
2. Step 2: Convert to fraction form
   992,390/2,173,900 = 2,173,900/x
3. Step 3: Cross multiply
   992,390x = 2,173,900 × 2,173,900
4. Step 4: Simplify right side
   992,390x = 4,725,841,210,000
5. Step 5: Solve for x
   x = 4,725,841,210,000/992,390
6. Step 6: Final answer
   x = 4,762,080.64