Finding the Third Proportional to 56,784 and 88,172

Step by Step Solution

1. Step 1: Write the proportion equation
   56,784 : 88,172 = 88,172 : x
2. Step 2: Convert to fraction form
   56,784/88,172 = 88,172/x
3. Step 3: Cross multiply
   56,784x = 88,172 × 88,172
4. Step 4: Simplify right side
   56,784x = 7,774,301,584
5. Step 5: Solve for x
   x = 7,774,301,584/56,784
6. Step 6: Final answer
   x = 136,910.07