Finding the Third Proportional to 19,109,588,937 and 28,664,386,404

Step by Step Solution

1. Step 1: Write the proportion equation
   19,109,588,937 : 28,664,386,404 = 28,664,386,404 : x
2. Step 2: Convert to fraction form
   19,109,588,937/28,664,386,404 = 28,664,386,404/x
3. Step 3: Cross multiply
   19,109,588,937x = 28,664,386,404 × 28,664,386,404
4. Step 4: Simplify right side
   19,109,588,937x = 821,647,047,917,820,051,456
5. Step 5: Solve for x
   x = 821,647,047,917,820,051,456/19,109,588,937
6. Step 6: Final answer
   x = 42,996,584,103.75