Finding the Third Proportional to 191,812.50 and 290,385

Step by Step Solution

1. Step 1: Write the proportion equation
   191,812.50 : 290,385 = 290,385 : x
2. Step 2: Convert to fraction form
   191,812.50/290,385 = 290,385/x
3. Step 3: Cross multiply
   191,812.50x = 290,385 × 290,385
4. Step 4: Simplify right side
   191,812.50x = 84,323,448,225
5. Step 5: Solve for x
   x = 84,323,448,225/191,812.50
6. Step 6: Final answer
   x = 439,613.94