Finding the Third Proportional to 90,157.50 and 208,710

Step by Step Solution

1. Step 1: Write the proportion equation
   90,157.50 : 208,710 = 208,710 : x
2. Step 2: Convert to fraction form
   90,157.50/208,710 = 208,710/x
3. Step 3: Cross multiply
   90,157.50x = 208,710 × 208,710
4. Step 4: Simplify right side
   90,157.50x = 43,559,864,100
5. Step 5: Solve for x
   x = 43,559,864,100/90,157.50
6. Step 6: Final answer
   x = 483,152.97