Finding the Third Proportional to 4,200,300 and 9,160,830

Step by Step Solution

1. Step 1: Write the proportion equation
   4,200,300 : 9,160,830 = 9,160,830 : x
2. Step 2: Convert to fraction form
   4,200,300/9,160,830 = 9,160,830/x
3. Step 3: Cross multiply
   4,200,300x = 9,160,830 × 9,160,830
4. Step 4: Simplify right side
   4,200,300x = 83,920,806,288,900
5. Step 5: Solve for x
   x = 83,920,806,288,900/4,200,300
6. Step 6: Final answer
   x = 19,979,717.23