Finding the Third Proportional to 90,030.50 and 193,404.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,030.50 : 193,404.50 = 193,404.50 : x
2. Step 2: Convert to fraction form
   90,030.50/193,404.50 = 193,404.50/x
3. Step 3: Cross multiply
   90,030.50x = 193,404.50 × 193,404.50
4. Step 4: Simplify right side
   90,030.50x = 37,405,300,620.25
5. Step 5: Solve for x
   x = 37,405,300,620.25/90,030.50
6. Step 6: Final answer
   x = 415,473.65