Finding the Third Proportional to 90,931,756 and 138,667,218

Step by Step Solution

1. Step 1: Write the proportion equation
   90,931,756 : 138,667,218 = 138,667,218 : x
2. Step 2: Convert to fraction form
   90,931,756/138,667,218 = 138,667,218/x
3. Step 3: Cross multiply
   90,931,756x = 138,667,218 × 138,667,218
4. Step 4: Simplify right side
   90,931,756x = 19,228,597,347,859,524
5. Step 5: Solve for x
   x = 19,228,597,347,859,524/90,931,756
6. Step 6: Final answer
   x = 211,461,850.00