Finding the Third Proportional to 20,069,476 and 42,728,072

Step by Step Solution

1. Step 1: Write the proportion equation
   20,069,476 : 42,728,072 = 42,728,072 : x
2. Step 2: Convert to fraction form
   20,069,476/42,728,072 = 42,728,072/x
3. Step 3: Cross multiply
   20,069,476x = 42,728,072 × 42,728,072
4. Step 4: Simplify right side
   20,069,476x = 1,825,688,136,837,184
5. Step 5: Solve for x
   x = 1,825,688,136,837,184/20,069,476
6. Step 6: Final answer
   x = 90,968,400.81