Finding the Third Proportional to 13,455,472 and 20,179,064

Step by Step Solution

1. Step 1: Write the proportion equation
   13,455,472 : 20,179,064 = 20,179,064 : x
2. Step 2: Convert to fraction form
   13,455,472/20,179,064 = 20,179,064/x
3. Step 3: Cross multiply
   13,455,472x = 20,179,064 × 20,179,064
4. Step 4: Simplify right side
   13,455,472x = 407,194,623,916,096
5. Step 5: Solve for x
   x = 407,194,623,916,096/13,455,472
6. Step 6: Final answer
   x = 30,262,381.28