Finding the Third Proportional to 12,615,441 and 19,767,129.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,615,441 : 19,767,129.50 = 19,767,129.50 : x
2. Step 2: Convert to fraction form
   12,615,441/19,767,129.50 = 19,767,129.50/x
3. Step 3: Cross multiply
   12,615,441x = 19,767,129.50 × 19,767,129.50
4. Step 4: Simplify right side
   12,615,441x = 390,739,408,669,770.25
5. Step 5: Solve for x
   x = 390,739,408,669,770.25/12,615,441
6. Step 6: Final answer
   x = 30,973,107.37