Finding the Third Proportional to 17,977,688 and 39,620,110

Step by Step Solution

1. Step 1: Write the proportion equation
   17,977,688 : 39,620,110 = 39,620,110 : x
2. Step 2: Convert to fraction form
   17,977,688/39,620,110 = 39,620,110/x
3. Step 3: Cross multiply
   17,977,688x = 39,620,110 × 39,620,110
4. Step 4: Simplify right side
   17,977,688x = 1,569,753,116,412,100
5. Step 5: Solve for x
   x = 1,569,753,116,412,100/17,977,688
6. Step 6: Final answer
   x = 87,316,740.42