Finding the Third Proportional to 12,538,644 and 19,132,262

Step by Step Solution

1. Step 1: Write the proportion equation
   12,538,644 : 19,132,262 = 19,132,262 : x
2. Step 2: Convert to fraction form
   12,538,644/19,132,262 = 19,132,262/x
3. Step 3: Cross multiply
   12,538,644x = 19,132,262 × 19,132,262
4. Step 4: Simplify right side
   12,538,644x = 366,043,449,236,644
5. Step 5: Solve for x
   x = 366,043,449,236,644/12,538,644
6. Step 6: Final answer
   x = 29,193,224.50