Finding the Third Proportional to 28,090 and 42,316

Step by Step Solution

1. Step 1: Write the proportion equation
   28,090 : 42,316 = 42,316 : x
2. Step 2: Convert to fraction form
   28,090/42,316 = 42,316/x
3. Step 3: Cross multiply
   28,090x = 42,316 × 42,316
4. Step 4: Simplify right side
   28,090x = 1,790,643,856
5. Step 5: Solve for x
   x = 1,790,643,856/28,090
6. Step 6: Final answer
   x = 63,746.67