Finding the Third Proportional to 31,243,490 and 64,009,132

Step by Step Solution

1. Step 1: Write the proportion equation
   31,243,490 : 64,009,132 = 64,009,132 : x
2. Step 2: Convert to fraction form
   31,243,490/64,009,132 = 64,009,132/x
3. Step 3: Cross multiply
   31,243,490x = 64,009,132 × 64,009,132
4. Step 4: Simplify right side
   31,243,490x = 4,097,168,979,393,424
5. Step 5: Solve for x
   x = 4,097,168,979,393,424/31,243,490
6. Step 6: Final answer
   x = 131,136,725.74