Finding the Third Proportional to 8,412,280 and 18,300,785

Step by Step Solution

1. Step 1: Write the proportion equation
   8,412,280 : 18,300,785 = 18,300,785 : x
2. Step 2: Convert to fraction form
   8,412,280/18,300,785 = 18,300,785/x
3. Step 3: Cross multiply
   8,412,280x = 18,300,785 × 18,300,785
4. Step 4: Simplify right side
   8,412,280x = 334,918,731,616,225
5. Step 5: Solve for x
   x = 334,918,731,616,225/8,412,280
6. Step 6: Final answer
   x = 39,813,074.65