Finding the Third Proportional to 19,638,994 and 42,677,402

Step by Step Solution

1. Step 1: Write the proportion equation
   19,638,994 : 42,677,402 = 42,677,402 : x
2. Step 2: Convert to fraction form
   19,638,994/42,677,402 = 42,677,402/x
3. Step 3: Cross multiply
   19,638,994x = 42,677,402 × 42,677,402
4. Step 4: Simplify right side
   19,638,994x = 1,821,360,641,469,604
5. Step 5: Solve for x
   x = 1,821,360,641,469,604/19,638,994
6. Step 6: Final answer
   x = 92,742,053.97