Finding the Third Proportional to 82,988,910 and 133,340,557.50

Step by Step Solution

1. Step 1: Write the proportion equation
   82,988,910 : 133,340,557.50 = 133,340,557.50 : x
2. Step 2: Convert to fraction form
   82,988,910/133,340,557.50 = 133,340,557.50/x
3. Step 3: Cross multiply
   82,988,910x = 133,340,557.50 × 133,340,557.50
4. Step 4: Simplify right side
   82,988,910x = 17,779,704,274,410,806
5. Step 5: Solve for x
   x = 17,779,704,274,410,806/82,988,910
6. Step 6: Final answer
   x = 214,241,930.33