Finding the Third Proportional to 90,055.50 and 210,373.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,055.50 : 210,373.50 = 210,373.50 : x
2. Step 2: Convert to fraction form
   90,055.50/210,373.50 = 210,373.50/x
3. Step 3: Cross multiply
   90,055.50x = 210,373.50 × 210,373.50
4. Step 4: Simplify right side
   90,055.50x = 44,257,009,502.25
5. Step 5: Solve for x
   x = 44,257,009,502.25/90,055.50
6. Step 6: Final answer
   x = 491,441.49