Finding the Third Proportional to 6,429,321 and 13,753,469

Step by Step Solution

1. Step 1: Write the proportion equation
   6,429,321 : 13,753,469 = 13,753,469 : x
2. Step 2: Convert to fraction form
   6,429,321/13,753,469 = 13,753,469/x
3. Step 3: Cross multiply
   6,429,321x = 13,753,469 × 13,753,469
4. Step 4: Simplify right side
   6,429,321x = 189,157,909,533,961
5. Step 5: Solve for x
   x = 189,157,909,533,961/6,429,321
6. Step 6: Final answer
   x = 29,421,133.20