Finding the Third Proportional to 12,440,178 and 19,472,386.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,440,178 : 19,472,386.50 = 19,472,386.50 : x
2. Step 2: Convert to fraction form
   12,440,178/19,472,386.50 = 19,472,386.50/x
3. Step 3: Cross multiply
   12,440,178x = 19,472,386.50 × 19,472,386.50
4. Step 4: Simplify right side
   12,440,178x = 379,173,836,005,382.25
5. Step 5: Solve for x
   x = 379,173,836,005,382.25/12,440,178
6. Step 6: Final answer
   x = 30,479,775.77