Finding the Third Proportional to 16,620.19 and 35,905.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,620.19 : 35,905.78 = 35,905.78 : x
2. Step 2: Convert to fraction form
   16,620.19/35,905.78 = 35,905.78/x
3. Step 3: Cross multiply
   16,620.19x = 35,905.78 × 35,905.78
4. Step 4: Simplify right side
   16,620.19x = 1,289,225,127.17
5. Step 5: Solve for x
   x = 1,289,225,127.17/16,620.19
6. Step 6: Final answer
   x = 77,569.83