Finding the Third Proportional to 19,690,979,774 and 42,368,460,247

Step by Step Solution

1. Step 1: Write the proportion equation
   19,690,979,774 : 42,368,460,247 = 42,368,460,247 : x
2. Step 2: Convert to fraction form
   19,690,979,774/42,368,460,247 = 42,368,460,247/x
3. Step 3: Cross multiply
   19,690,979,774x = 42,368,460,247 × 42,368,460,247
4. Step 4: Simplify right side
   19,690,979,774x = 1,795,086,423,701,619,212,288
5. Step 5: Solve for x
   x = 1,795,086,423,701,619,212,288/19,690,979,774
6. Step 6: Final answer
   x = 91,162,879,872.13