Finding the Third Proportional to 69,152 and 140,840

Step by Step Solution

1. Step 1: Write the proportion equation
   69,152 : 140,840 = 140,840 : x
2. Step 2: Convert to fraction form
   69,152/140,840 = 140,840/x
3. Step 3: Cross multiply
   69,152x = 140,840 × 140,840
4. Step 4: Simplify right side
   69,152x = 19,835,905,600
5. Step 5: Solve for x
   x = 19,835,905,600/69,152
6. Step 6: Final answer
   x = 286,845.00