Finding the Third Proportional to 90,748.50 and 208,293

Step by Step Solution

1. Step 1: Write the proportion equation
   90,748.50 : 208,293 = 208,293 : x
2. Step 2: Convert to fraction form
   90,748.50/208,293 = 208,293/x
3. Step 3: Cross multiply
   90,748.50x = 208,293 × 208,293
4. Step 4: Simplify right side
   90,748.50x = 43,385,973,849
5. Step 5: Solve for x
   x = 43,385,973,849/90,748.50
6. Step 6: Final answer
   x = 478,090.26