Finding the Third Proportional to 109,462,990 and 237,978,620

Step by Step Solution

1. Step 1: Write the proportion equation
   109,462,990 : 237,978,620 = 237,978,620 : x
2. Step 2: Convert to fraction form
   109,462,990/237,978,620 = 237,978,620/x
3. Step 3: Cross multiply
   109,462,990x = 237,978,620 × 237,978,620
4. Step 4: Simplify right side
   109,462,990x = 56,633,823,577,104,400
5. Step 5: Solve for x
   x = 56,633,823,577,104,400/109,462,990
6. Step 6: Final answer
   x = 517,378,737.57