Finding the Third Proportional to 4,035,870 and 8,780,328

Step by Step Solution

1. Step 1: Write the proportion equation
   4,035,870 : 8,780,328 = 8,780,328 : x
2. Step 2: Convert to fraction form
   4,035,870/8,780,328 = 8,780,328/x
3. Step 3: Cross multiply
   4,035,870x = 8,780,328 × 8,780,328
4. Step 4: Simplify right side
   4,035,870x = 77,094,159,787,584
5. Step 5: Solve for x
   x = 77,094,159,787,584/4,035,870
6. Step 6: Final answer
   x = 19,102,240.60