Finding the Third Proportional to 91,692 and 139,411.13

Step by Step Solution

1. Step 1: Write the proportion equation
   91,692 : 139,411.13 = 139,411.13 : x
2. Step 2: Convert to fraction form
   91,692/139,411.13 = 139,411.13/x
3. Step 3: Cross multiply
   91,692x = 139,411.13 × 139,411.13
4. Step 4: Simplify right side
   91,692x = 19,435,461,773.77
5. Step 5: Solve for x
   x = 19,435,461,773.77/91,692
6. Step 6: Final answer
   x = 211,964.64