Finding the Third Proportional to 7,812,288 and 12,072,384

Step by Step Solution

1. Step 1: Write the proportion equation
   7,812,288 : 12,072,384 = 12,072,384 : x
2. Step 2: Convert to fraction form
   7,812,288/12,072,384 = 12,072,384/x
3. Step 3: Cross multiply
   7,812,288x = 12,072,384 × 12,072,384
4. Step 4: Simplify right side
   7,812,288x = 145,742,455,443,456
5. Step 5: Solve for x
   x = 145,742,455,443,456/7,812,288
6. Step 6: Final answer
   x = 18,655,540.53