Finding the Third Proportional to 4,200,376 and 9,160,968

Step by Step Solution

1. Step 1: Write the proportion equation
   4,200,376 : 9,160,968 = 9,160,968 : x
2. Step 2: Convert to fraction form
   4,200,376/9,160,968 = 9,160,968/x
3. Step 3: Cross multiply
   4,200,376x = 9,160,968 × 9,160,968
4. Step 4: Simplify right side
   4,200,376x = 83,923,334,697,024
5. Step 5: Solve for x
   x = 83,923,334,697,024/4,200,376
6. Step 6: Final answer
   x = 19,979,957.67