Finding the Third Proportional to 90,301 and 207,680.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,301 : 207,680.50 = 207,680.50 : x
2. Step 2: Convert to fraction form
   90,301/207,680.50 = 207,680.50/x
3. Step 3: Cross multiply
   90,301x = 207,680.50 × 207,680.50
4. Step 4: Simplify right side
   90,301x = 43,131,190,080.25
5. Step 5: Solve for x
   x = 43,131,190,080.25/90,301
6. Step 6: Final answer
   x = 477,638.01