Finding the Third Proportional to 11,808,354 and 19,281,978

Step by Step Solution

1. Step 1: Write the proportion equation
   11,808,354 : 19,281,978 = 19,281,978 : x
2. Step 2: Convert to fraction form
   11,808,354/19,281,978 = 19,281,978/x
3. Step 3: Cross multiply
   11,808,354x = 19,281,978 × 19,281,978
4. Step 4: Simplify right side
   11,808,354x = 371,794,675,592,484
5. Step 5: Solve for x
   x = 371,794,675,592,484/11,808,354
6. Step 6: Final answer
   x = 31,485,732.52