Finding the Third Proportional to 61,518.94 and 87,971.63

Step by Step Solution

1. Step 1: Write the proportion equation
   61,518.94 : 87,971.63 = 87,971.63 : x
2. Step 2: Convert to fraction form
   61,518.94/87,971.63 = 87,971.63/x
3. Step 3: Cross multiply
   61,518.94x = 87,971.63 × 87,971.63
4. Step 4: Simplify right side
   61,518.94x = 7,739,006,805.14
5. Step 5: Solve for x
   x = 7,739,006,805.14/61,518.94
6. Step 6: Final answer
   x = 125,798.77