Finding the Third Proportional to 19,709,359 and 42,142,530

Step by Step Solution

1. Step 1: Write the proportion equation
   19,709,359 : 42,142,530 = 42,142,530 : x
2. Step 2: Convert to fraction form
   19,709,359/42,142,530 = 42,142,530/x
3. Step 3: Cross multiply
   19,709,359x = 42,142,530 × 42,142,530
4. Step 4: Simplify right side
   19,709,359x = 1,775,992,834,800,900
5. Step 5: Solve for x
   x = 1,775,992,834,800,900/19,709,359
6. Step 6: Final answer
   x = 90,109,111.86