Finding the Third Proportional to 64,380,391 and 139,735,310

Step by Step Solution

1. Step 1: Write the proportion equation
   64,380,391 : 139,735,310 = 139,735,310 : x
2. Step 2: Convert to fraction form
   64,380,391/139,735,310 = 139,735,310/x
3. Step 3: Cross multiply
   64,380,391x = 139,735,310 × 139,735,310
4. Step 4: Simplify right side
   64,380,391x = 19,525,956,860,796,100
5. Step 5: Solve for x
   x = 19,525,956,860,796,100/64,380,391
6. Step 6: Final answer
   x = 303,290,436.07