Finding the Third Proportional to 70,776 and 99,156

Step by Step Solution

1. Step 1: Write the proportion equation
   70,776 : 99,156 = 99,156 : x
2. Step 2: Convert to fraction form
   70,776/99,156 = 99,156/x
3. Step 3: Cross multiply
   70,776x = 99,156 × 99,156
4. Step 4: Simplify right side
   70,776x = 9,831,912,336
5. Step 5: Solve for x
   x = 9,831,912,336/70,776
6. Step 6: Final answer
   x = 138,915.91