Finding the Third Proportional to 90,744,678 and 139,481,073

Step by Step Solution

1. Step 1: Write the proportion equation
   90,744,678 : 139,481,073 = 139,481,073 : x
2. Step 2: Convert to fraction form
   90,744,678/139,481,073 = 139,481,073/x
3. Step 3: Cross multiply
   90,744,678x = 139,481,073 × 139,481,073
4. Step 4: Simplify right side
   90,744,678x = 19,454,969,725,231,328
5. Step 5: Solve for x
   x = 19,454,969,725,231,328/90,744,678
6. Step 6: Final answer
   x = 214,392,404.65