Finding the Third Proportional to 42,358 and 90,346

Step by Step Solution

1. Step 1: Write the proportion equation
   42,358 : 90,346 = 90,346 : x
2. Step 2: Convert to fraction form
   42,358/90,346 = 90,346/x
3. Step 3: Cross multiply
   42,358x = 90,346 × 90,346
4. Step 4: Simplify right side
   42,358x = 8,162,399,716
5. Step 5: Solve for x
   x = 8,162,399,716/42,358
6. Step 6: Final answer
   x = 192,700.31