Finding the Third Proportional to 191,139 and 303,658.50

Step by Step Solution

1. Step 1: Write the proportion equation
   191,139 : 303,658.50 = 303,658.50 : x
2. Step 2: Convert to fraction form
   191,139/303,658.50 = 303,658.50/x
3. Step 3: Cross multiply
   191,139x = 303,658.50 × 303,658.50
4. Step 4: Simplify right side
   191,139x = 92,208,484,622.25
5. Step 5: Solve for x
   x = 92,208,484,622.25/191,139
6. Step 6: Final answer
   x = 482,415.86