Finding the Third Proportional to 139,043,488 and 210,354,468

Step by Step Solution

1. Step 1: Write the proportion equation
   139,043,488 : 210,354,468 = 210,354,468 : x
2. Step 2: Convert to fraction form
   139,043,488/210,354,468 = 210,354,468/x
3. Step 3: Cross multiply
   139,043,488x = 210,354,468 × 210,354,468
4. Step 4: Simplify right side
   139,043,488x = 44,249,002,207,563,024
5. Step 5: Solve for x
   x = 44,249,002,207,563,024/139,043,488
6. Step 6: Final answer
   x = 318,238,580.20