Finding the Third Proportional to 78,090,428,472 and 109,968,531,058

Step by Step Solution

1. Step 1: Write the proportion equation
   78,090,428,472 : 109,968,531,058 = 109,968,531,058 : x
2. Step 2: Convert to fraction form
   78,090,428,472/109,968,531,058 = 109,968,531,058/x
3. Step 3: Cross multiply
   78,090,428,472x = 109,968,531,058 × 109,968,531,058
4. Step 4: Simplify right side
   78,090,428,472x = 12,093,077,823,054,311,063,552
5. Step 5: Solve for x
   x = 12,093,077,823,054,311,063,552/78,090,428,472
6. Step 6: Final answer
   x = 154,859,924,060.87