Finding the Third Proportional to 91,573,251 and 196,439,856

Step by Step Solution

1. Step 1: Write the proportion equation
   91,573,251 : 196,439,856 = 196,439,856 : x
2. Step 2: Convert to fraction form
   91,573,251/196,439,856 = 196,439,856/x
3. Step 3: Cross multiply
   91,573,251x = 196,439,856 × 196,439,856
4. Step 4: Simplify right side
   91,573,251x = 38,588,617,025,300,736
5. Step 5: Solve for x
   x = 38,588,617,025,300,736/91,573,251
6. Step 6: Final answer
   x = 421,396,167.59