Finding the Third Proportional to 144,124,559,613 and 309,939,369,858

Step by Step Solution

1. Step 1: Write the proportion equation
   144,124,559,613 : 309,939,369,858 = 309,939,369,858 : x
2. Step 2: Convert to fraction form
   144,124,559,613/309,939,369,858 = 309,939,369,858/x
3. Step 3: Cross multiply
   144,124,559,613x = 309,939,369,858 × 309,939,369,858
4. Step 4: Simplify right side
   144,124,559,613x = 96,062,412,987,974,117,490,688
5. Step 5: Solve for x
   x = 96,062,412,987,974,117,490,688/144,124,559,613
6. Step 6: Final answer
   x = 666,523,549,115.56