Finding the Third Proportional to 37,720.69 and 78,537.09

Step by Step Solution

1. Step 1: Write the proportion equation
   37,720.69 : 78,537.09 = 78,537.09 : x
2. Step 2: Convert to fraction form
   37,720.69/78,537.09 = 78,537.09/x
3. Step 3: Cross multiply
   37,720.69x = 78,537.09 × 78,537.09
4. Step 4: Simplify right side
   37,720.69x = 6,168,075,094.70
5. Step 5: Solve for x
   x = 6,168,075,094.70/37,720.69
6. Step 6: Final answer
   x = 163,519.69