Finding the Third Proportional to 37,128 and 77,316

Step by Step Solution

1. Step 1: Write the proportion equation
   37,128 : 77,316 = 77,316 : x
2. Step 2: Convert to fraction form
   37,128/77,316 = 77,316/x
3. Step 3: Cross multiply
   37,128x = 77,316 × 77,316
4. Step 4: Simplify right side
   37,128x = 5,977,763,856
5. Step 5: Solve for x
   x = 5,977,763,856/37,128
6. Step 6: Final answer
   x = 161,004.20