Finding the Third Proportional to 19,651,680 and 42,289,344

Step by Step Solution

1. Step 1: Write the proportion equation
   19,651,680 : 42,289,344 = 42,289,344 : x
2. Step 2: Convert to fraction form
   19,651,680/42,289,344 = 42,289,344/x
3. Step 3: Cross multiply
   19,651,680x = 42,289,344 × 42,289,344
4. Step 4: Simplify right side
   19,651,680x = 1,788,388,615,950,336
5. Step 5: Solve for x
   x = 1,788,388,615,950,336/19,651,680
6. Step 6: Final answer
   x = 91,004,362.78