Finding the Third Proportional to 40,355,142,234 and 86,699,117,479

Step by Step Solution

1. Step 1: Write the proportion equation
   40,355,142,234 : 86,699,117,479 = 86,699,117,479 : x
2. Step 2: Convert to fraction form
   40,355,142,234/86,699,117,479 = 86,699,117,479/x
3. Step 3: Cross multiply
   40,355,142,234x = 86,699,117,479 × 86,699,117,479
4. Step 4: Simplify right side
   40,355,142,234x = 7,516,736,971,637,443,788,800
5. Step 5: Solve for x
   x = 7,516,736,971,637,443,788,800/40,355,142,234
6. Step 6: Final answer
   x = 186,264,663,076.93