Finding the Third Proportional to 17,931,154,954 and 39,240,146,446

Step by Step Solution

1. Step 1: Write the proportion equation
   17,931,154,954 : 39,240,146,446 = 39,240,146,446 : x
2. Step 2: Convert to fraction form
   17,931,154,954/39,240,146,446 = 39,240,146,446/x
3. Step 3: Cross multiply
   17,931,154,954x = 39,240,146,446 × 39,240,146,446
4. Step 4: Simplify right side
   17,931,154,954x = 1,539,789,093,103,526,477,824
5. Step 5: Solve for x
   x = 1,539,789,093,103,526,477,824/17,931,154,954
6. Step 6: Final answer
   x = 85,872,276,328.75