Finding the Third Proportional to 42,354 and 69,907.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,354 : 69,907.50 = 69,907.50 : x
2. Step 2: Convert to fraction form
   42,354/69,907.50 = 69,907.50/x
3. Step 3: Cross multiply
   42,354x = 69,907.50 × 69,907.50
4. Step 4: Simplify right side
   42,354x = 4,887,058,556.25
5. Step 5: Solve for x
   x = 4,887,058,556.25/42,354
6. Step 6: Final answer
   x = 115,386.00