Finding the Third Proportional to 17,977,672 and 39,620,070

Step by Step Solution

1. Step 1: Write the proportion equation
   17,977,672 : 39,620,070 = 39,620,070 : x
2. Step 2: Convert to fraction form
   17,977,672/39,620,070 = 39,620,070/x
3. Step 3: Cross multiply
   17,977,672x = 39,620,070 × 39,620,070
4. Step 4: Simplify right side
   17,977,672x = 1,569,749,946,804,900
5. Step 5: Solve for x
   x = 1,569,749,946,804,900/17,977,672
6. Step 6: Final answer
   x = 87,316,641.82